Acquisitions, West Africa Investments, Goodwill and Other Intangible Assets Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2018		Dec. 30, 2017
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	$ 201		$ 141
Additions	425		17
Purchase price allocation adjustment	2		39
Currency translation adjustment	(20)		4
Gross carrying amount, ending balance	608		201
Accumulated amortization, beginning balance	67		54
Amortization (a)	23	[1]	12
Currency translation adjustment accumulated amortization	(3)		1
Accumulated amortization, ending balance	87		67
Intangible assets subject to amortization net, beginning balance	134		87
Additions	425		17
Amortization	(23)	[1]	(12)
Purchase price allocation adjustment net	2		39
Currency translation adjustment net	(17)		3
Intangible assets subject to amortization net, ending balance	521		134
Estimated aggregate annual amortization expense for next twelve months	27
Estimated aggregate annual amortization expense for year two	27
Estimated aggregate annual amortization expense for year three	27
Estimated aggregate annual amortization expense for year four	27
Estimated aggregate annual amortization expense for year five	27
U.S. Snacks
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	42		42
Additions	0		0
Purchase price allocation adjustment	0		0
Currency translation adjustment	0		0
Gross carrying amount, ending balance	42		42
Accumulated amortization, beginning balance	22		19
Amortization (a)	3	[1]	3
Currency translation adjustment accumulated amortization	0		0
Accumulated amortization, ending balance	25		22
Intangible assets subject to amortization net, beginning balance	20		23
Additions	0		0
Amortization	(3)	[1]	(3)
Purchase price allocation adjustment net	0		0
Currency translation adjustment net	0		0
Intangible assets subject to amortization net, ending balance	17		20
U.S. Morning Foods
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	8		8
Additions	0		0
Purchase price allocation adjustment	0		0
Currency translation adjustment	0		0
Gross carrying amount, ending balance	8		8
Accumulated amortization, beginning balance	8		8
Amortization (a)	0	[1]	0
Currency translation adjustment accumulated amortization	0		0
Accumulated amortization, ending balance	8		8
Intangible assets subject to amortization net, beginning balance	0		0
Additions	0		0
Amortization	0	[1]	0
Purchase price allocation adjustment net	0		0
Currency translation adjustment net	0		0
Intangible assets subject to amortization net, ending balance	0		0
U.S. Specialty
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	0		0
Additions	0		0
Purchase price allocation adjustment	0		0
Currency translation adjustment	0		0
Gross carrying amount, ending balance	0		0
Accumulated amortization, beginning balance	0		0
Amortization (a)	0	[1]	0
Currency translation adjustment accumulated amortization	0		0
Accumulated amortization, ending balance	0		0
Intangible assets subject to amortization net, beginning balance	0		0
Additions	0		0
Amortization	0	[1]	0
Purchase price allocation adjustment net	0		0
Currency translation adjustment net	0		0
Intangible assets subject to amortization net, ending balance	0		0
North America Other
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	22		5
Additions	0		17
Purchase price allocation adjustment	2		0
Currency translation adjustment	0		0
Gross carrying amount, ending balance	24		22
Accumulated amortization, beginning balance	5		4
Amortization (a)	1	[1]	1
Currency translation adjustment accumulated amortization	0		0
Accumulated amortization, ending balance	6		5
Intangible assets subject to amortization net, beginning balance	17		1
Additions	0		17
Amortization	(1)	[1]	(1)
Purchase price allocation adjustment net	2		0
Currency translation adjustment net	0		0
Intangible assets subject to amortization net, ending balance	18		17
Europe
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	45		40
Additions	0		0
Purchase price allocation adjustment	0		0
Currency translation adjustment	(2)		5
Gross carrying amount, ending balance	43		45
Accumulated amortization, beginning balance	18		14
Amortization (a)	3	[1]	3
Currency translation adjustment accumulated amortization	(1)		1
Accumulated amortization, ending balance	20		18
Intangible assets subject to amortization net, beginning balance	27		26
Additions	0		0
Amortization	(3)	[1]	(3)
Purchase price allocation adjustment net	0		0
Currency translation adjustment net	(1)		4
Intangible assets subject to amortization net, ending balance	23		27
Latin America
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	74		36
Additions	0		0
Purchase price allocation adjustment	0		39
Currency translation adjustment	(11)		(1)
Gross carrying amount, ending balance	63		74
Accumulated amortization, beginning balance	10		6
Amortization (a)	4	[1]	4
Currency translation adjustment accumulated amortization	(2)		0
Accumulated amortization, ending balance	12		10
Intangible assets subject to amortization net, beginning balance	64		30
Additions	0		0
Amortization	(4)	[1]	(4)
Purchase price allocation adjustment net	0		39
Currency translation adjustment net	(9)		(1)
Intangible assets subject to amortization net, ending balance	51		64
Asia Pacific
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	10		10
Additions	425		0
Purchase price allocation adjustment	0		0
Currency translation adjustment	(7)		0
Gross carrying amount, ending balance	428		10
Accumulated amortization, beginning balance	4		3
Amortization (a)	12	[1]	1
Currency translation adjustment accumulated amortization	0		0
Accumulated amortization, ending balance	16		4
Intangible assets subject to amortization net, beginning balance	6		7
Additions	425		0
Amortization	(12)	[1]	(1)
Purchase price allocation adjustment net	0		0
Currency translation adjustment net	(7)		0
Intangible assets subject to amortization net, ending balance	$ 412		$ 6

[1] The currently estimated aggregate amortization expense for each of the next five succeeding fiscal periods is approximately $27 million per year through 2023.